Rico said the event started as light snow and sleet in some areas before turning to all freezing rain after 9 p.m.

Rico said the ground was cold enough for the freezing rain to form a thin glaze of ice on most surfaces.

The heaviest accumulations fell between midnight and 3 a.m., Rico said. The temperatures are slowly rising from southern parts of the Tri-state to northern parts. Rico said she expects the precipitation to change over to all rain between 6 and 8 a.m. Some areas have already seen the change as temperatures rose passed freezing.

That glaze generally didn't exceed 0.2 inch in most places, but it is still caused potentially dangerous slick surfaces on bridges, sidewalks, decks and side streets.

Rico said the ice accumulations usually need to reach at least 0.25 inch before it brings down power lines. Duke Energy did report 6,300 without power in Boone County at about 6:30 a.m., but could not say what exactly what caused it.